President

Jenn DeSouza, MSW, LICSW, CGP

Jennifer DeSouza, MSW, LICSW, CGP received her Masters in Social Work from Boston College in 1999. Jennifer received her CGP in 2013 after completing the NSGP training program and she is currently participating in the Modern Psychoanalytic weekend training program at the Center for Group Studies in New York City. As an experienced social worker Jennifer has practiced in community mental health settings providing evaluation and treatment to individuals, families and groups. Jennifer currently manages the Group Therapy Program at Massachusetts General Hospital where she also provides individual therapy and consultations referral and resource information to patients and families. 

President-Elect

Guy R. Croteau, LICSW, CGP

After 20 years working in Information Technology, Guy Croteau, LICSW, CGP became a therapist after graduating Boston University in 2001. He's been in Private Practice since 2014 and previously worked at Fenway Health for 8 years where he led a number of gay men's groups and other groups for those with chronic mental health issues. Guy joined NSGP in 2011 following the completion of the Principles Course. He then served on the Executive Board as Treasurer for 2 consecutive terms (2016-2020). He believes that NSGP has a dynamic and integral role to play in the professional lives of those who facilitate groups in any setting. He also strongly advocates for NSGP's growth in areas of diversity, inclusion and equity and looks forward to helping lead NSGP to become a more welcoming organization to all who want to participate.

Treasurer

Dr. William Sharp, PsyaD, LMHC

William Sharp, PsyaD, LMHC, CGP is a psychoanalyst who received his doctorate from the Boston Graduate School of Psychoanalysis in 2010.  He trained in Modern Psychoanalysis at BGSP and in the weekend training program at the Center for Group Studies in New York City. William is an associate teaching professor in the department of psychology at Northeastern University and the director of the Master's in Mental Health Counseling at BGSP.  He maintains a private practice in Brookline Village working with children, families and couples as well as individuals and groups.

Secretary

Natasha Khoury, M.Ed., M.A., LMHC

Member-at-Large, Liaison to the Executive Committee

Richard Montes, Mental Health Counselor

Mary Alicia Barnes, OTD

Mary Alicia Barnes, OT, OTD is a faculty member at Tufts University in the Department of Occupational Therapy where she teaches group theory in the entry level doctoral program and has been co-leading process training groups for many years. Her clinical practice (groups and individual work) was with children and adolescents with severe emotional and behavioral disorders in public and private hospitals. Mary has published and presented on topics related to group theory and practice nationally and internationally. Her research scholarship is related to therapeutic group leader training outcomes. Mary is a longtime member of NSGP and serves as the Conference Committee’s workshop committee co-chair and is currently co-leading the Diversity and Inclusion Task Force with Sasha Watkins, LMHC, CPRP.

Cindy Berman-Richter, LICSW

Jeff Brand, Psy.D, CGP

Jeff Brand, Psy.D. CGP, is a staff psychologist at The Brookline Center for Community Mental Health and has a private practice in Brookline, MA. At the Brookline Center, he directs the adult group therapy program, including supervision, teaching, and program development, as well as providing clinical care for adults and adolescents in both individual and group therapy. In his private practice, he works with adults in both individual and group therapy, and with adolescents in individual therapy. Prior to joining the staff at The Brookline Center, he trained through Harvard Medical School by completing his internship at the Cambridge Health Alliance, and he previously worked as a drug & alcohol counselor. He has written about trauma and published articles about using concepts from group psychotherapy to understand sociopolitical phenomenon. He is also on the Training Committee of the Northeastern Society for Group Psychotherapy. He enjoys being outside.

Madeline Freeman, LICSW

Maddie Freeman, LICSW received her MSW from Smith College School for Social Work in 2018 and began her social work career working with older adults with medical complexities. Maddie is now full-time at a group practice in Harvard Square, doing Individual, Couples, and Group work. She is receiving Couples training at PCFINE in their fellowship program. Having grown up in a Co-Housing neighborhood, Maddie adores all things "group," and is getting her first groups off the ground in her practice. She is grateful to be able to lean on NSGP mentors the whole way. With NSGP, Maddie has been Co-Chair of the Newsletter Committee since 2019, and helped launch the first online version of the newsletter, "NSGPeople." Outside of the group therapy world, Maddie enjoys frequenting cafes, performing music, and the chocolate-peanut butter combination.

Vanessa Gamble, PsyD, CGP

Amy Matias, LICSW, CGP 

Amy Matias, PhD, LICSW, CGP is a clinical social worker and Certified Group Therapist in private practice in Cambridge, MA, where she works with individuals, couples and runs process groups for women. Amy holds a PhD in biochemistry, which she applies in her approach working with adults with complex trauma. At NSGP she facilitates workshops and experience groups and currently serves on the Board, Practice Development and Diversity, Equity and Inclusion Committees. Amy also presents at AGPA and a number of other settings. Outside of work, she enjoys long walks and good conversation with her Covid rescue dog Lilo.